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Makes 🢒 Cadillac 🢒 2005 🢒 STS 🢒 Bulletins 🢒 Multiple Electrical System Malfunctions, Engine Will Not Start, Engine Will Not Shutdown, IP Gauges/Lighting Inoperative, Radio Inoperative, HVAC Display Erratic, Loss of Rear Door Functions

Multiple Electrical System Malfunctions, Engine Will Not Start, Engine Will Not Shutdown, IP Gauges/Lighting Inoperative, Radio Inoperative, HVAC Display Erratic, Loss of Rear Door Functions

Subject:Multiple Electrical System Malfunctions, Engine Will Not Start, Engine Will Not Shutdown, IP Gauges/Lighting Inoperative, Radio Inoperative, HVAC Display Erratic, Loss of Rear Door Functions (Inspect Both Rear Door Harnesses and Repair, if Necessary)

Models:2005 Cadillac STS
Built Between and Including VIN Breakpoints 50112423 and 50133076

Attention: This inspection should be performed on all vehicles currently in your inventory prior to sale or delivery.

Condition

Some customers may comment on one or more of the following conditions:

    • Engine Will Not Start
    • Engine Will Not Shutdown
    • IP Gauges/Lighting Inoperative
    • Radio Inoperative
    • HVAC Display Erratic
    • Loss of Rear Door Window/Lock Functions

These conditions may occur intermittently.

Cause

These conditions may be caused from the rear door wiring harness being misrouted causing the harness to contact the metal door bracket. This contact may cause a rub through to the wires enclosed in that harness.

Correction

Inspect both rear door wiring harnesses. Repair any damaged wires and reroute harness to correct location. Use the procedure listed below.

  1. Make sure the ignition is off.
  2. Remove both the rear door trim panels. Refer to the Side Rear Door Trim Panel Replacement procedure in the Doors sub-section of the Service Manual (SI Document ID #1465575).

    3. Incorrect Routing
    Object Number: 1549344 Size: SH

    Correct Routing
    Object Number: 1549345 Size: SH
  3. Inspect for proper clip orientation on the harnesses. See the above illustrations.
  4. If the clip is found with improper orientation, disconnect the clip from the stud and inspect the wires for insulation damage where the harness contacted the metal bracket.
  5. Repair any damaged wires. Refer to the Wiring Repairs procedure in the Wiring Systems sub-section of the Service Manual (SI Document ID #162420).
  6. Reinstall the clip to the stud with the proper orientation.
  7. Install the rear door trim panels. Refer to the Side Rear Door Trim Panel Replacement procedure in the Doors sub-section of the Service Manual (SI Document ID #1465575).
  8. Start the vehicle.
  9. Verify the window operates in both directions by using the switch on the applicable door.
  10. Relearn the window express function. Refer to the Window Motor Express Function Programming procedure in the Doors sub-section of the Service Manual (SI Document ID #1427287).
  11. Verify the power door lock operates.
  12. Turn off the ignition.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

N9513*

Rear Door Wiring Harness -- Inspect (Both Doors)

0.4 hr

Add

To Repair Each Damaged Wire

0.1 hr

*This is a unique labor operation number for use only with this bulletin. This number will not be published in the Labor Time Guide.